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People often ask, how to correctly use a rangefinder duplex?
Let’s find out!
How to Correctly Use a Rangefinder Duplex?
A rangefinder duplex is used to measure distances between two points. It consists of a laser pointer mounted on one end of a telescopic tube, which is then attached to a base unit. The laser beam is reflected off objects and back to the telescope, where it is detected by a sensor. This information is then processed into distance measurements.
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Coincidence Rangefinder
Optical ranging devices are used by American soldiers in the 1940s. They use a coincidence rangefinder with a distinctive single eyepiece. This device allows them to measure distances to objects. These devices were used in fire control systems, coastal artillery, and rangefinder cameras.
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Design
A telescope consists of a long tube, a pair of lenses, and a set of prisms. The tube holds the lenses and the prisms.
Applications
Optical rangefinders were originally used for military purposes to determine the range of a target. Later, they became an accessory for photography. Rangefinder cameras were built into the camera body. When the images were taken, the camera focused automatically.
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How to Correctly Use a Rangefinder Duplex?
Usage
A coincidence rangefinder uses a pair of eyepieces. When the beams coincide, the distance to the object is measured. In this case, the distance to the target is determined by rotating the compensator until the two images match up.
A coincidence rangefinder is used by the Dutch army, the Belgian army, and the Polish navy.
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Conclusion
The US National Defense Research Committee found that there was no significant difference between the two types of instruments. Both were precise enough for military use.
However, the Barr and Stroud F-25 was more convenient because it could be carried around while the Bausch and Lomb model had to be mounted on a tripod.
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